Home / 20,103.03-27,742.23-11,151.95

Finding the Fourth Proportional to 20,103.03, 27,742.23 and 11,151.95

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Solution

The fourth proportional to 20,103.03, 27,742.23 and 11,151.95 is: 15,389.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.03 : 27,742.23 = 11,151.95 : x
  2. Step 2: Convert to fraction form
    20,103.03/27,742.23 = 11,151.95/x
  3. Step 3: Cross multiply
    20,103.03x = 27,742.23 × 11,151.95
  4. Step 4: Simplify right side
    20,103.03x = 309,379,823.14
  5. Step 5: Solve for x
    x = 309,379,823.14/20,103.03
  6. Step 6: Final answer
    x = 15,389.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.